#include <LiquidCrystal.h>
#include <Keypad.h>
#define Buzzer 13
#define Led 11
char* password ="11111";
int posisi = 0;
const byte rows = 4;
const byte cols = 4;
char keyMap [rows] [cols]=
{
  {'1', '2', '3', 'A'},
  {'4', '5', '6', 'B'},
  {'7', '8', '9', 'C'},
  {'*', '0', '#', 'D'}
};
byte rowPins [rows] = {2, 3, 4, 5};
byte colPins [cols] = {6, 7, 8, 9};
Keypad myKeypad = Keypad( makeKeymap(keyMap), rowPins, colPins, rows, cols);
LiquidCrystal lcd (A5, A4, A3, A2, A1, A0); // (RS,E,D4,D5,D6,D7)

void setup ()
{
  lcd.begin(16, 2);
  pinMode(Buzzer, OUTPUT);
  pinMode(Led, OUTPUT);
  setLocked (true);
}

void loop()
{
  char whichKey = myKeypad.getKey();
  lcd.setCursor(4, 0);
  lcd.print("Silahkan");
  lcd.setCursor(0, 1);
  lcd.print(" Ketik password");
  if(whichKey == '*' || whichKey == '#' || whichKey == 'A' ||
  whichKey == '*' || whichKey == 'C' || whichKey == 'D' || whichKey == '0')
  {
   posisi=0;
   setLocked(true);
   lcd.clear();
   lcd.setCursor(0, 0);
   lcd.print(" Pasword salah");
   lcd.setCursor(0,1);
   lcd.print(" Ulangi lagi");
   tone(Buzzer,2000,200);
   delay(1000);
   lcd.clear();
  }
  if(whichKey == password [posisi])
  {
   posisi ++;
  }
  if(posisi == 5)
  {
   setLocked (false);
   lcd.clear();
   lcd.setCursor(1, 0);
   lcd.print("*** SUKSES ***");
   delay(5000);
   lcd.clear();
   lcd.setCursor(0, 0);
   lcd.print("HAI... Kenalin");
   lcd.setCursor(0, 1);
   lcd.print(" Namaku Resti");
   delay(5000);
   lcd.clear();
  }
    delay(100);
}

void setLocked(int locked)
{
  if(locked)
    {
    digitalWrite(Led, LOW);
    noTone(Buzzer);
    }
    else
    {
    digitalWrite(Led, HIGH);
    tone(Buzzer,1535,500);
      }
}